Demongo, The Master of Grimm

Demongo the soul collector is reborn, thanks to the efforts of a power-hungry wizard. He plans to use his new powers to become high king of all of Remnant, and crush anyone who stands in his way. Will Teams RWBY and JNPR be able to stop him? How will Ruby herself stand against the Master of Grimm? Set between volumes 1 and 2. Also featuring Deadpool because reasons.